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Finding the Fourth Proportional to 1,329,330, 1,834,466 and 725,718

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Solution

The fourth proportional to 1,329,330, 1,834,466 and 725,718 is: 1,001,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,330 : 1,834,466 = 725,718 : x
  2. Step 2: Convert to fraction form
    1,329,330/1,834,466 = 725,718/x
  3. Step 3: Cross multiply
    1,329,330x = 1,834,466 × 725,718
  4. Step 4: Simplify right side
    1,329,330x = 1,331,304,996,588
  5. Step 5: Solve for x
    x = 1,331,304,996,588/1,329,330
  6. Step 6: Final answer
    x = 1,001,485.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.